I can’t speak to how this fit the Fancy Pony, as I rode in it on another horse. It does have the adjustable gullet system, however.
The saddle itself felt particularly grippy, but in a good way. Synthetic saddles do not immediately put me off, so this one is a serious contender. The thigh blocks were significant, but they were subtly supportive. The seat cradled my body and quietly encouraged me to sit up without leaning forward. My leg fell down underneath me into a solid position that I could move it out of as need be to apply the aids.
I would seriously consider this saddle, dependent, of course, on how the Fancy Pony goes in it.